In article <Mon, 23 Oct 95 10:44:08 PDT_2@ccm.hf.intel.com>,
Mike A Gendimenico <Mike_A_Gendimenico@ccm.sc.intel.com> wrote:
> adjusted the mixture to a very light blue on the colortune. Seems like
> I couldn't get it any richer than that. Took it for a test ride. Not
> enough power starting from a dead stop and the top end doesn't seemm to
> be there either. Also, ran pretty crappy when cold. Lots of carb
> backfiring, ocassionally once it warmed up. Also when it (the engine)
> would get hot, the idle would creep up to ~1800 rpm. Drove the car a
> week to work like this.
...
> Cleaned and gapped the plugs to 0.025",
> they're running white/very light brown color.
All your clues (light blue, crappy when cold, backfiring, white
plugs) all *clearly* point in one direction: The mixture is too lean.
Are you sure you've got the correct needles? Compare them to the
originals. If they're thicker, you'll get a leaner mix. Be a little
careful so that you don't burn pistons (A stock engine would perhaps
manage, but a lean mix is death for a "hot" engine).
What are these 'performance' needles anyway? I can't see the point
of a needle change without a change in other factors, such as cam or
exhaust headers.
I suggest you return to stock needles.
> Re-adjusted the points
> to ~0.016", and changed the timing with the vacuum unit hooked up from
> 4 ATDC to TDC. Dwell reads 32 degrees, should be 42??
The dwell will really only be important at high RPM, assuming the basic
timing is correct. I don't think ignition timing is your basic problem.
Egil
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